Advantages over rolling-element bearings

Improvement in damping by several orders of magnitude means

  • higher quality workpiece surface finish
  • longer tool service life and
  • higher maximum cutting capacity

Lack of wear means

  • machine properties are unaffected by extended use
  • increased machine availability
  • lower maintenance costs
  • longer machine service life and
  • lower annual machine costs

Reduced radial deviation and greater guide precision means

  • greater workpiece accuracy

Very low and speed-proportional guide friction means

  • no path faults, even when the direction of motion of the slides is reversed
  • stick-slip effects are prevented and maximum positioning accuracy and true running is achieved, even with very heavy slide weights and the shortest paths and even with alternating directions.

no force or torque impacts due to roller deviations in guides and lead screws means

  • improved surface quality and greater workpiece precision.

Reduced sensitivity to contamination (as with hydrostatics, the majority of the contamination is flushed out by the oil and is not rolled into the guideways, as is the case with roller bearings and guides) means

  • greater functional safety
  • machine properties are unaffected by extended use
  • increased machine availability
  • lower maintenance costs and
  • longer machine service life and
  • lower annual machine costs

As there are no rolling-element parts, the installation space is reduced, this means

  • more space during design
  • neighbouring components can be scaled up and
  • smaller components with the same level of performance can be used.

Profile defects on the guide surfaces are largely offset by the hydrostatics, this means

  • hydrostatic bearings run truer and hydrostatic guides are more linear than the guide surfaces themselves.

 

In contrast to rolling-element guides, hydrostatic guides do not limit you to standard size carriages and guide rails.